Cohen ring

In algebra, a Cohen ring is a field or a complete discrete valuation ring of mixed characteristic $(0,p)$ whose maximal ideal is generated by p. Cohen rings are used in the Cohen structure theorem for complete Noetherian local rings.

See also

Norm field

References

Cohen, I. S. (1946), "On the structure and ideal theory of complete local rings", Transactions of the American Mathematical Society, 59: 54–106, ISSN 0002-9947, JSTOR 1990313, MR 0016094, doi:10.2307/1990313 Cohen's paper was written when "local ring" meant what is now called a "Noetherian local ring".
Grothendieck, Alexandre; Dieudonné, Jean (1964). "Éléments de géométrie algébrique: IV. Étude locale des schémas et des morphismes de schémas, Première partie". Publications Mathématiques de l'IHÉS. 20: 5–259. MR 0173675. doi:10.1007/bf02684747.

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